function passwordStrength(password)
{
	var desc = new Array();
	desc[0] = "Very Weak";
	desc[1] = "Weak";
	desc[2] = "Better";
	desc[3] = "Medium";
	desc[4] = "Strong";
	desc[5] = "Strongest";
	var score = 0; //if password bigger than 5 give 1 point
	if (password.length > 5) score++;
	//if password has both lower and uppercase characters give 1 point
	if ( ( password.match(/[a-z]/) ) && ( password.match(/[A-Z]/) ) ) score++;
	//if password has at least one number give 1 point
	if (password.match(/\d+/)) score++;
	//if password has at least one special caracther give 1 point
	if ( password.match(/.[!,@,#,$,%,^,&,*,?,_,~,-,(,)]/) ) score++;
	//if password bigger than 6 give another 1 point
	if (password.length > 6) score++;
	document.getElementById("passwordDescription").innerHTML = desc[score];
	document.getElementById('passwordStrength').setAttribute('class', "strength" + score);
	document.getElementById('passwordStrength').setAttribute('className', "strength" + score);

}